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DCS 的維護(hù)可分為：日常維護(hù);預(yù)防性維護(hù)和故障維護(hù)，日常維護(hù)和預(yù)防維護(hù)是在系統(tǒng)未發(fā)生故障所進(jìn)行的維護(hù)。故障維護(hù)發(fā)生在故障產(chǎn)生之后,往往 已造成系統(tǒng)部分功能失靈并對(duì)生產(chǎn)造成不良影響;相反,預(yù)防性維護(hù)是在系統(tǒng)正常運(yùn)行時(shí),對(duì)系統(tǒng)進(jìn)行有計(jì)劃的定期維護(hù),及時(shí)掌握系統(tǒng)運(yùn)行狀態(tài)、消除系統(tǒng)故障隱 患、保證系統(tǒng)長(zhǎng)期穩(wěn)定可靠地運(yùn)行,形成定期維護(hù)的概念。實(shí)踐證明,定期維護(hù)能夠有效地防止DCS 突發(fā)故障的產(chǎn)生,形成可觀的間接經(jīng)濟(jì)效益。
　　DCS 系統(tǒng)的日常維護(hù)
　　系統(tǒng)的日常維護(hù)是DCS系統(tǒng)穩(wěn)定高效運(yùn)行的基礎(chǔ)，主要的維護(hù)工作有以下幾點(diǎn)：
　　1) 完善DCS系統(tǒng)管理制度。
　　2) 保證空調(diào)設(shè)備穩(wěn)定運(yùn)行,保證室溫變化小于±5℃/h ,避免由于溫度、濕度急劇變化導(dǎo)致在系統(tǒng)設(shè)備上的凝露。
　　3) 盡量避免電磁場(chǎng)對(duì)系統(tǒng)的干擾,避免移動(dòng)運(yùn)行中的操作站、顯示器等,避免拉動(dòng)或碰傷設(shè)備連接電纜和通訊電纜等。
　　4) 注意防塵，現(xiàn)場(chǎng)與控制室合理隔離，并定時(shí)清掃，保持清潔，防止粉塵對(duì)元件運(yùn)行及散熱產(chǎn)生不良影響;
　　5) 嚴(yán)禁使用非正版軟件和安裝與系統(tǒng)無(wú)關(guān)軟件。
　　6) 做好控制子目錄文件的備份,各自控回路的PID 參數(shù)、調(diào)節(jié)器正反作用等系統(tǒng)數(shù)據(jù)記錄工作。
　　7) 檢查控制主機(jī)、顯示器、鼠標(biāo)、鍵盤等硬件是否完好,實(shí)時(shí)監(jiān)控工作是否正常。
　　8) 查看故障診斷畫面,是否有故障提示。
　　預(yù)防維護(hù)
　　有計(jì)劃地進(jìn)行主動(dòng)性、預(yù)防性維護(hù),保證系統(tǒng)運(yùn)行穩(wěn)定可靠。根據(jù)大修周期，利用大修進(jìn)行一次預(yù)防性的維護(hù)，以掌握系統(tǒng)運(yùn)行狀態(tài),消除故障隱患。大修期間對(duì)DCS 系統(tǒng)應(yīng)進(jìn)行徹底、全面的維護(hù)，內(nèi)容包括：
　　1) 系統(tǒng)冗余測(cè)試: 對(duì)冗余電源、服務(wù)器、控制器、通訊網(wǎng)絡(luò)進(jìn)行冗余測(cè)試。操作站、控制站停電檢修。包括計(jì)算機(jī)內(nèi)部、控制站機(jī)籠、電源箱等部件的灰塵清理。
　　2) 系統(tǒng)供電線路檢修。并對(duì)UPS進(jìn)行供電能力測(cè)試和實(shí)施放電操作。
　　3) 接地系統(tǒng)檢修。包括端子檢查、對(duì)接地電阻測(cè)試。
　　大修后系統(tǒng)維護(hù)負(fù)責(zé)人應(yīng)確認(rèn)條件具備方可上電，并應(yīng)嚴(yán)格遵照上電步驟進(jìn)行。

Schneider Modicon AEG/ AS-B805-016 115 VAC Input ASB805016

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Schneider Modicon PROGRAMMABLE CONTROLLER 884 AS-884A-311

Schneider Modicon AS-B872-200/ASB872200 Analog Output Beautiful

Schneider Modicon AS-B825-016

MODICON TELEMECANIQUE MAGELIS OPERATOR INTERFACE TXB TF024510E BENT METAL

Schneider Automation / Modicon PanelMate Plus MM-PM22400C WARRANTY

Sharp JW-34N INPUT MODULE 32POINTS 12/24 VDC

RELIANCE ELECTRIC 0-49005-5 LINEAR VOLTAGE TIME UNIT

SIEMENS 6ES7-131-4BD00-0AA0/6ES7131-4BD00-0AA0 OUTPUT MODULE LOT OF 2 XLNT

SIEMENS 6DD1642-0BC0Analog Output Module SDYND EA12

OMRON 3G2A9-AL004-PE COMMUNICATIONS MODULE

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SIEMENS Sinumerik Operator Panel 6FC5203-0AF26-0AA0-Z 6FC5203 0AF26 0AA0 Z

SIEMENS Jacobs Chuck 0080725FC JCCAT40xER25-6-FC Tool Holder

ALLENBRADLEY1771OBOUTPUTMODULE8POINT12-24VDC

Allen Bradley SLC-500 Input Module 16-Point 1746-IA16

ABB PFV1-101 POWER SUPPLY PFV1101 YM110001SP

york 031-01065-002 control board rev h

/REFURB REXROTH INDRAMAT HDS03.2-W075N-HS12-01-FW

MODICON AS-506P-F32 USPP AS506PF32

ALLEN BRADLEY 1394-SJT10-C-RL USPP 1394SJT10CRL

GETTYS 110-235 NSFP 110235

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ALLEN BRADLEY 1305-BA09A-DE USPP 1305BA09ADE

Siemens 6ES5 921-3UA12 -- 6ES59213UA12

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Siemens 6ES5 430-7LA11S5 Input Module 17789

Siemens S5 Sub Rack CR1 6ES5 700-1LA12 E Stand 01

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SEALEDASA5540-AIP20-K9 CISCO 5540 W/AIP-SSM-20 SW HA 4GE1FE 3DES/AES

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Schneider Modicon / TSX Compact AS-P120-250 AC Power Supply - ASP120250

Schneider Modicon AS-BDEO-216 BRAND16 Pt 24VDC Input ASBDEO216

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Schneider Modicon PLC B872 ANALOG OUTPUT AS-B872-200 4CH

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Schneider Modicon AS-BBKF-201 Interbus-S Master Module

Schneider/Modicon MM-PM21400C PanelMate Plus 2000C

SIEMENS 6ES7 321-1BH50-0AA0 DIGITAL INPUT MODULE GOOD TAKEOUT

Sans Digital HA-ARC-ARC1223X 2-Port Mini-SAS 6G SAS/SATA PCIe 2.0 x8 Controller

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SIEMENS 6FC5-114-0AA02-0AA0 USPP 6FC51140AA020AA0

AllenBradleyMountingClipKit4-PiecePanelview600Cat77135-166-55

ALLEN BRADLEY X-232820 NSFP X232820

ABB DSQC 115

Adimec MX12P Progressive scan Camera (ISS1.0) w/ Nikon AF Nikkor 1:1.8 85MM Lens

(A0) 1 Brand Rosemount 3051S Transmitter SEE PICS (A0)

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YAMATAKE 80360147-001 USPP 80360147001

FANUC A16B-2200-0080 USPP A16B22000080

ENDRESS & HAUSER 33FT1H-MH1FD11F21A NSPP 33FT1HMH1FD11F21

RELIANCE ELECTRIC 86466-80R USPP 8646680R

OMRON CV500-SNT31 NSFP CV500SNT31

ORIENTAL MOTOR UDX5128 NSFP UDX5128

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Siemens 6ES5 441-8MA11 Digital Output Module 26622

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Siemens 6ES7 331-7KF02-0AB0 -FS- 6ES73317KF020AB0

Spectrum Controls 8000 SCP-204

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WS-X45-SUP6L-E Cisco Supervisor Engine 6L-E Control processor

SIEMENS 6ES7 621-1AD01-0AE3 C7-621 99%

Siemens RWX62.734/509 Controller

Reliance 11C409S

Schneider Modicon Helen .. Right As Rain

Schneider Modicon AS-B260-010 USPP ASB260010

Schneider Modicon AS-S202-020 USPP ASS202020

Schneider Modicon AS-B840-108 800 I/O REED RELAY MODULE

Schneider Modicon AS-B804-016 ASB804016 16 Point 120 VAC Output

MODICON MM-PM10-200 PANELMATE PLUS MONITOR

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Siemens 6ES5 523-3UA11 6ES55233UA11

SIEMENS S5 6ES5 458-7LA11 Relay Output Module

SIEMENS 6DD3-470-0AD0/6DD3470-0AD0 BOARD XLNT

SIEMENS SINUMERIK 840D/DE NCU 572.4 6FC5357-0BB23-0AE0 NIB

SIEMENS 6SN1113-1AB01-0BA1 Pulsed Resistor Simodrive -

SIEMENS Simodrive 611 E/R 6SN1146-1BB00-0DA1 NIB

SIEMENS 6FC9340-7HL Connector Cable USED

Advantech PCA-6006LV Rev.B2

ALLEN-BRADLEY 1771-OBD 10-60 VDC OUTPUT MODULE

ABB ACS800-U1-0070-7+N650 Drive 525-690V WOW

ADEPT 10332-00505 REV E 1033200505

6FM1723-3AA10 Siemens SIMATIC S5/S7 WF723A Positioning Module with I/O 3-Axis

9450 XYCOM MONITORS CRT REMANUFACTURED

STAEFA CONTROL SYS 549-407 USPP 549407

COOPER TOOLS 2BA-2B150A-2/2K2A-2ZA USPP 2BA2B150A22K2A2Z

CABLETRON SSR-SERC-04-AA USPP SSRSERC04AA

NEMATRON CORP IC61A1-C8910461 USPP IC61A1C8910461

MICRO EPSILON ILD-1401-50(000) USPP ILD140150000

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SIEMENS S5 ET200U 6ES5 318-8MB12 DP INTERFACE

Siemens 6ES5 242-1AA13S5 COUNTER MODULE CIRCUIT BOARD 54315

SIEMENS 6ES7621-1AD02-0AE3 Membrane Keypad C7-621

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Interface PCI expansion interface module PCI-2724C 2724

YOSHIMURA FOR YAMAHA RHINO 700 08-11

Siemens 6ES6400-0EN00-0AA0 Micromaster Encoder FreeShip

SIEMENS MP370 12.1" 6AV6545-0DA10-0AX0 Touch Screen Display Glass

Pacific Scientific SC453-004-05

Schneider Modicon AS-B883-200 Thermocouple Input AS-B883-200 In/O

Schneider Modicon AS-521P-001 USPP AS521P001

Schneider Modicon AS-M480-004 USPP ASM480004

Schneider Modicon AS-8534-000 HIGH/LOW DENSITY CONNECTOR SET

Schneider Modicon 115VAC B351 INPUT MODULE AS-B351-001

Schneider Modicon AS-BDAP-210 TSX OUTPUT MODULE

SIEMENS TRI-S SINGLE INPUT INTEL INTERFACE MODULE 500-896225

Schneider/Modicon 140NOE77101 NIB

SIEMENS SINKING DIGITAL OUTPUT MODULE 505-3532 5053532

SIEMENS 4AV2401-2EB00-0A POWER SUPPLY NNB

SIEMENS SINUMERIK 820 T 6FX1121-4BA03 TESTED WARRANTY

Cisco WS-SVC-CMM Communication Media Module Warranty

SIEMENS SIMODRIVE 6SN1145-1BA01-0DA1 6SN11451BA010DA1

SIEMENS SIMODRIVE 6SN1145-1AA01-0AA1SINUMETIK 840D NCU-BOX 6FC52476FC5356 [5]

Advantech PCA-6006 CPU Main Board REV B2

Allen-Bradley 2711-TC1-B PanelView Touch Screen

ABB 3HAB8101-6/01E DSQC346B Servo Drive Unit

ACCURAY 58119687 USPP 58119687

A16B-2202-0900 Fanuc Main CPU with all daughter boards in good quality

810A06A ALLEN BRADLEY 810 A06A

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ASEA BROWN BOVERI 57310255-AX USPP 57310255AX

ALLEN BRADLEY 8520-S10 USPP 8520S10

MAGNETEK GPD515C-B096 USPP GPD515CB096

HONEYWELL 14506951-003 USPP 14506951003

ALLEN BRADLEY 1336Z-PA022-N-GM1 NSFP 1336ZPA022NGM1

REXROTH 8107199569 NSPP 8107199569

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SIEMENS 6ES5 451-4UA13 -- 6ES54514UA13

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PWR-950-AC 950W AC P/S FOR CISCO 7600 AND CAT 6500

GSM Modem Pool 8 Ports USB interface Wavecom Module AT Commands Q2303

Tripp Lite B078-101-PS2 Server Interface PS2 Module B078-101-PS2

Siemens 6AV3503-1DB10 OP3 ping Worldwide

Siemens Inverter 6SE6420-2UC25-5CA1 6SE64202UC255CA1 in Box

Modicon SW-CS5D-1DA

Schneider Modicon Extender Cable 6' AS-W801-006 warranty

Schneider Modicon ASP120000 Power Supply 115/230 VAC AS-P120-000 Electric

Schneider Modicon AS-E385-904 NSFP ASE385904

Schneider Modicon AS-S953-003

Schneider Modicon AS-B241

Schneider Modicon Output Module AS-B804-016 115 VAC WARRANTY

Schneider TSX08ED12R8 Telemecanique MODICON in Box

Schneider Modicon Premium TSXAEY414 TSX 4 ANA I. Multirange

SIEMENSTITEXASINSTRUMENTSOUTPUTMODULE500-5011

SIEMENS 6DD1681-0AG2 output module 120vac/dc

SIEMENS 6FX1115-0AA02 SINUMERIK VIDEO INTERFACE MODULE

GM MODULE COMMUNICATION INTERFACE

SIEMENS SIMODRIVE E/R-MODULE INT.36/47 KW 6SN1145-1BA02-0CA1

SIEMENS Sinumerik 6FC5403-0AA20-1AA0 6FC54030AA201AA0

SIEMENS Seimens Moore APACS VIM 39VIMCCN 16171-126 Volt Input

Allen-Bradley PanelView 1200 Operator Interface 2711TC1MC

5CD174ZA810A800 20 HP, 2500 RPM GE DC SURPLUS ELECTRIC MOTOR

ABB WRIST AX.5-6 for IRB 1400 - 3HAB3388-1 - 3HAA2286-2

A06B-0249-B400#0100 FANUC SERVO MOTORS

75 HP 1200 RPM 460V OIL WELL PUMP MOTOR THREE PHASE, TEFC HOSTILE DUTY NEMA D

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ALLEN BRADLEY 1785-V80B USPP 1785V80B

ALLEN BRADLEY 1747-L543 NSFP 1747L543

GIDDINGS & LEWIS 502-03963-61 NSFP 5020396361

VAISALA SENSOR SYS DMP246 USPP DMP246

TELEMECANIQUE TSX-P67-3 NSFP TSXP673

GAM MANUFACTURING CO 700430 NSPP 700430

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SIEMENS 6ES5 374-1KH21 6ES5374-1KH21

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SIEMENS 6ES5 436-7LA11 6ES54367LA11 DIGITAL INPUT MOD

Siemens LOGO! PLC 12/24RCo 6ED1 052-2MD00-0BA5

Reliance Shark 57C554 Remote I/O Interface 57C-554

Texas Instruments 305-10T

Spirent Adtech AX/4000 400303 ATM E3 Interface

Vivotek IP7154 /Night Network Camera

Siemens C98043-A1052-L1 03

Modicon AS-T984-305

Schneider Modicon AUTOMATION DAP 218/AS-BDAP-218

Schneider Modicon AS-E685-904 ASE685904 Memory Module

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Schneider Modicon AS-B825-016

Schneider Modicon POWER SUPPLY REMOTE I/O PROCESSOR AS-P451-681

Schneider Modicon AS-S908-110 / 984-8 S908 PROC SNGL CABLE

Schneider AC Servo Motor BSH1002M11A1A FreeShip

SEALED Siemens 6ES7 431-0HH00-0AB0 S7-400 Signal Module Analog Input

RELIANCE 0-57401-2/0574012/O-57401-2 AUTOMAX DIGITAL I/O MODULE RFB

SIEMENS 6ES7 322-1BH01-0AA0 OUTPUT MODULE 24VDC 16POINT

SIEMENS SINUMERIK 802D 6FC5603-0AD00-0AA1 6FC56030AD000AA1 NIB

NOTIFIER "NCM F" NETWORK COMMUNICATION MODULE -

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SIEMENS SINUMERIK OP010 6FC5203-0AF01-0AA0 Membrane Keypad

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Allen-Bradley1771-0DIsolatedACOutputModuleSeriesCPLC120V225MA@5VDC

ALLEN BRADLEY SLC500 1746- 0A16 SERIES D OUTPUT MODULE

ABB Power Switchgear 4800 Volt W/ ABB Power Circuit Breaker 1200 Amp 4.76 KV

YUASA CORPORATION 60V 15A UNIT,SWU 60 15 T2 D1

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ALLEN BRADLEY 1395-B65-D1-P50-X1 USPP 1395B65D1P50X1

HARMONIC DRIVE HTL8000-1L-AS-DC USPP HTL80001LASDC

GE FANUC IC3600VMPA1 USPP IC3600VMPA1

SIEMENS 6SE7643-7HC33-3KX0 NSFP 6SE76437HC333KX0

SIEMENS 6DS1220-8AB USPP 6DS12208AB

ALLEN BRADLEY 1771-IFF USPP 1771IFF

Siemens 6ES5 927-3KA13 6ES5927-3KA13 Free Ship